Just finished front knuckle drum to disk upgrade on 1974 FJ40. Bought 1976 FJ55 knuckles and birfields from Deadlew. Cleaned and painted knuckles, dust shield, arms. Bought new rotors and reman calipers. Bought knuckle rebuild kit from Cruiser Outfitters. Took some time but everything turned out great. Finished this morningdrained the brakes and took for a test drive. Everything working well and it runs and stops nicely. On to the next project.